Joist hanger



' v C. S. BOARDMAN JOIST HANGER Fjrledv Maron 25, 1926 2 Sheets-,Sheet 1 Aug. 1 6, 1927.

. 1,639,484 C. S. BOARDMAN JoIsT HANGER Filed March 25. 1926 2 Sheets-Sheet 2 Cha/lm .51 en/'Mami hw cutaway Patented Aug. 16, 1927.

mureng STATES i 1,639,484 PATENT OFFICEn CHARLES BORDMAN, 0F PITTSBURGH, ,PENNSYLVANIIL ASSTGNOR TO JONES &

LAUGHLTN STEEL CORPORATION, GF PTTSBURGH, PENNSYLVANIA,'A CORPORA- TION OF PENNSYLVANIA.

Jois'r HANGER.

Application filed March 23, A1926.' Serial No. 96,838.

This invention relates particularly toy metal hangers for light weight structural beams (such as the J & L Jr. beam) and so-called metal lumber joists, and aims to provide a positioning and supporting means for such beams and joists for connecting them to the girders and headers of a steel structure, which may be readily manufactured by commercial methods and easily installed without special tools, and which requires no drilling or preparation for the supporting struc! ture or joist to receiveit.

Further objects and advantages of the invention will appear from the description of the illustrative embodiments shown in the accompanying drawings, wherein Fig. 1 is a sidevie-w and Fig. 2 an end view of a double hanger for supporting the abutting ends of two joists from anfintervening I-beam;

.Figs 3 and 4 are similar views of' a single hanger for use with a channel supporting beam or girder;

Fig. 5 is a side view of a double hanger for supporting joists of differentdepth on opposite sides of' the supporting girder; and

F 6 is a plan view of the hanger shown in F igf. y

Referring to Figs. 1 and 2, the double hanger illustrated therein Ycomprises a pair of channel bars 10 disposed side b y side and connected `at vtheir. ends by two vU-shaped strips 11. The channel bars may be placed across the top flangesof a beam or girder 12 with the straps disposed on'opposite sides of the girder and hanging down like stirrups in position to receive and support the adjacent ends of the steel joists 13. The

upper ends of the straps are advantageously bent around the top flanges.V 14 and backv against the webs of the channels, and may be riveted or welded thereto 'in lorder to make them secure. The top angcs 14 of the channels may advantageously be ar.

ranged vto extend across the space over the supporting girders 12 in substantially the same plane as the top flanges of the joists 13, thereby serving to maintain a continuous bearing for the floor slab or structure resting upon the joists.

The flanges or legs of the channels are preferably disposed to face outwards, andthe lower flanges are sheared ornotched at their outer edges to form two prongs 15 as shown in dotted lines in Fig. 1, which embrace the top flange of' the girder and serve to position the hanger thereon similarly toa saddle. These prongs or clips 15 may be bent aroundY under the top flange as shown to secure the hanger in position and clamp it from movement lengthwise of the beam or girder and from tipping movement over the top of the beam or girder. Y

The single hanger shown in Figs. 3 and 4 is designed for use with a channel beam or girder, and comprises two anglel bars 16 with positioningprongs 17 cut from their horizontal flanges to engage .the top flange of the channel 18 and a stirrup 19 ,suspended from the projecting ends of the angle bars to support the end of the steel joist 20. The single hanger may be used with yan I-beam support if desired by ,lengthening `the saddle y prises angle bars 21 vforming the saddle portion, but as it is designed to supporta deep joist 22 on one side and a shallower joist 23 onv the opposite side of the supporting girder 24, the straps or stirrups 25, 26, are made to correspond to the depthot1 the vertical webs and width of the flanges of the respective joists. The prongs or clips 27 are stamped out of the metal of the horizontal flanges of the angle bars between their A.edges yand vertical flanges, thereby avoiding interrupting the continuity of the edges and lessening the liability of twistingthe angle bars at these points when overloaded.

It is obvious that hangers embodying the invention may be adapted to various types and dimensions of supporting members, and may advantageously be used for supporting joists and beams of various types.

. The positioning or saddle prongs mayy easily be bent to engage Iunder the top flange by means of an ordinaryhammer so as to secure the hangers -in proper place lengthwise of the support to suit the desired spacing of the joists prior to raising the latter to position in the structure, so that the joists may be permanent-ly set as fast as they are raised to place. The joists need only to be. cut to length before being set in place, and this may .be done in advance of Araising them,

The invention is not restricted to the particulaiI shapes shown, and may be adapted by change oi one or two dimensions only tmeet the usual conditions of service. It is not necessary to carry a large stock of odd sizes olf hangers because the stirrups 'may be :rade lin sizes to suit the several sizes of j eist and carried on hand ready to be slipped over the. ends of the saddle members and secured thereto upon receipt ot an Order for hangers to suit any Aspecial type or size of beam or girder. 'The saddle members may be readily cut lfrom the angle or channel bar stock in lengths to suit the particular need, and the prongs when used, may likewise be sheared upon receipt olf the order from the lower flanges of the saddle members with tools usually available at steel warehouses.

The invention is simple in construction, inexpensive, readily installed, strong and well adapted to the needs of the type olf building construction wherein metal joists are used.

l claim the i'ollowing as my invention:

l. A joist hanger or 'the like comprising straight saddle members adapted to rest upon and project over the top flange of a supporting beam or girder member and tlshape stirrup members suspended 'trom the projecting ends ot said saddle members, said stirrup members connecting` said saddle members and iiorming seats i'or the ends o't adjacent joists on opposite sides ot said supporting member.

2. il joist hanger or the like comprising straight saddle members Vadapted to res upon and project over the top flange ot a supporting beam or IQirder and stirrup members connecting said saddle members and` torming seats lfor the ends of adjacent joists en opposite sides et said supporting member, the upper ends ot' said stirrup members beine bent to hook lover the projecting ends ot d saddle members. l il. joist hanger or the like comprising saddle inen'ibers having lateral f'langes provided with prongs adapted to embrace the top lange or a supporting beam or gir-der, said saddle members projecting over the beam at their ends and stirrup members connectin said i )ers and forming .sr-ats ter the e I ioists on opp-osite sides olf said supporting` member, the upper ends or' said stirrup i .er bers Vbeing bent to hook over the projecting ends ot said saddle members.

ll. 'tour part joist hanger or the like comprising two saddle members having lateral llanges provided with prongs short ot their ends adapted to embrace the top flange of a supporting beam or girder, and two stirrup members connecting` the ends oisaid saddle members and forming seats for the ends of adj cent joists on opposite sides of said supporting member.

5. A fabricated steel joist hanger or the like comprising spaced bars adapted to rest upon a support with their ends projecting, a stirrup member having a bearingportion and sides adapted to receive the end of a joist, the upper enes ot the sides being secured to the projecting ends ot said bars, and means associated with said bars for engaging the support to position said hanger thereon. Y

G. A fabricated steel joist hanger or the like comprising spaced flanged bars adapted lo rest upon asupport with their ends projecting, a sheet metal stirrup member secured to the projecting ends of said bars, said stirrup member being bent to embrace the end ot a joist, and tongues depending Jrom the flanges of said bars :tor engaging the support to position said hanger thereon.

7. A `joist hanger or the like comprising spaced bars having top and bottom flanges connected by webs, the ends of said bars being secured together by metal strips with their ends bent around the top flanges and extending down alongside the webs and their middle portions forming stirrups for supporting the ends of joists disposed on opposite sides of the support, said strips being spaced on said bars to receive the snpport between them, and anchoring means for retaining said'hanger on the support. i

8. A joist hanger or the like comprising spaced bars having top and bottom flanges connected by webs, the ends ot saidbars being secured together by metal strips with their ends bent around the top flanges and extending down alongside thewebs and their middle portions forming stirrups Yfor sup` porting the ends of joists disposed on opposite sides of the support, said strips being lspaced on said *bars to receive the support CHARLES S. BOARDMAN. 

